In CCNA (or Networking quizzes) you have an IP Address in this format: 192.168.1.1/30 and you need to find, Network, Broadcast and Subnet Mask. All of this should be done in 45 seconds. How can we do and how the previous table can help us?

Let’s start to analyze the address: 192.168.1.1/30; 30 – 24 is 6 and our sixth position is 252; so our Subnet Mask will be 255.255.255.252.

Let’s calculate the Network and the Broadcast address:

256 – 252 = 4 so we’ll have just 4 address, from 0 to 3 (this case was really simple one). At the end our answer should be: